Find the missing term: 563, 647, 479, 815, ?

672
386
279
143

The answer is 143.

The sequence is a simple alternating addition and subtraction of 78. Starting with 563, 78 is added to get 641. Then 78 is subtracted to get 479. This pattern continues, with 78 being added and then subtracted, to get 815 and then 143.

Option A, 672, is incorrect because it is not the result of adding 78 to 563 or subtracting 78 from 815.

Option B, 386, is incorrect because it is not the result of adding 78 to 479 or subtracting 78 from 647.

Option C, 279, is incorrect because it is not the result of adding 78 to 815 or subtracting 78 from 647.

Option D, 143, is the correct answer because it is the result of adding 78 to 479 or subtracting 78 from 815.

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